Shank skiver



Dec. 29, 1925 1,567,669

' J. MUSACCHlA SHANK SKIVER Filed July 1924 2 sheets-Shefl- IIIH vINVENTOR iioefluaiacclllla WITNESS y MEM ATTORNEY l J. MUSACCHIA SHANKSKIVER Dec. 29,1925- 1,567,669

Filed July 23, 1924 2 Sheets-Sheet 2 m 56' P, 1 /////4 1 w W V INVENTO?M41811 Wrrqesszs 72 ,LWM V 6 ATTORNEY Patented Dec. 29, 1925.

UNITED STATES J OE MUSACGHIA, OF SACRAMENTO, CALIFORNIA.

SHANK SKIVER.

Application filed. July 23, 192 1.

To all whom it may concern:

Be it known that 1, Jon MUSACOHIA, a citizen of the United States,residing at Sacramento, in the county of Sacramento and State ofCalifornia, have invented a new and useful Shank Skiver, of which thefollowing is a specification.

This invention relates to a shank skiver, particularly adapted repairingtrade for trimming the broken portion of the sole leather of old shoespreparatory to re-soling the same. It may also be used to advantage inskiving the new half sole before it is applied to the shoe.

The object of the invention is to provide a simple and practical device,operable mechanically to effect the above results neatly and quickly. Itis so constructed that the shoe may be held manually underneath thecutter with the shank in proper position for trimming, thus avoiding theuse of, or need for clamps. The carriage is ward preferably by manuallyoperated means, and at one stroke the sole or shank is cleanly andneatly cut to the required shape.

In machines heretofore constructed for this purpose, it takes almost asmuch time to clamp the shoe properly in positionas it takes for a goodshoemaker to trim it by hand. The present invention not only saves thetime required to clamp the work in position, but does the trimming asneatly and accurately as can be done by more expensive and complicatedmachines.

The specific construction of the invention in its preferred form will bemore fully explained in connection with the accompanying drawingsforming a part of this specification.

In the drawings:

Figure 1 is a plan view of the invention.

, Figure 2 is a vertical section taken on the line 2-2 of Figure 1.

Figure 3 is a vertical section taken on the line 3-3 of Figure 2.

Figure 4; is a bottom plan view of a portion of the invention showingthe adjusting mechanism.

Figure 5 is a detail sectional view of a ortion of the frame structure.

Figure 6 is a detail sectional view taken on the line 66 of Figure 5.

Referring in detail to the drawings, the invention comprises a casting10, in the form to be used for the shoe brought for- 7 Serial No.727,741.

of a table supported by suitable legs 11, and having a centrallongitudinal opening 12 traversed by a transverse web 13. Extendingacross the opening 12, at the for ward edge of the web 13, is a steelgage block 14., which is adapted to support the sole or shank in properposition to be acted upon by the trimming knife hereinafter specificallydescribed. This block is preferably formed at its ends with dependingflanges 15, having rearwardly extending perforated ears 16 integrally orotherwise secured thereto, which are connected by pivot pins or boltsforated ears 18 formed on the forwar edge of the web 13. The gage block14, be tween the flanges 15, is wedge shaped with its edge disposedforwardly, and its upper surface corrugated, as shown at 19, and adaptedto support the piece of leather to be trimmed, as shown in Figures 1 and2. Pro vision is made for adjusting the block 14 about the pivot pins 17to accord with the thickness of the leather to be trimmed, as

will be hereinafter more fully described.

The skiving knife 20 is secured by bolts 21 to a bar 22, extendingtransversely across the space 12. Slots 23 are formed in the rearportion of the knife 20 for receiving the bolts 21 so that the knife maybe adjusted forwardly, and held in fixed relation to the bar by screws25k in cooperation with the bolts 21. The bar 22 is integrally orotherwise secured to a carriage 25 resting on the surface of the table10, and guided longitudinally thereof by cleats or flanges 26, whichrest on blocks 27 suitably secured to the surface of the table, and areheld thereon by bolts 28 or the like. Each side of the carriage 25 has alongitudinal rack bar 29 formed on its upper face and mesh ing with apinion 30 carried by a transverse shaft 31, which is journaled inupright posts 32 secured to the sides of the table 10. The shaft 31 alsohas secured to each end another pinion 33, meshing with a similar pinion34 secured to a drive shaft 35, also journaled in the posts 32, andprovided at one end with a hand crank 36, by. means of which it may berotated to advance or retract the carriage 25, and the skiving knife 20carried thereby.

The carriage 25 is provided at each side with depending perforated ears3?, which form bearings for an adjusting shaft 38, which is provided. atits outer end with a 17 to corresponding perhand wheel 39, and at itsinner end with a cam block lO, having a plurality of flat faces ll atvarying distances from the center of the shaft. As shown in the drawings, the cam block is provided with six faces, which may be designatedby digits, or other indicia, and the hand wheel 39 may becorrespondingly designated. The cam blocks 4-0 are so arranged that anyone of the faces 41 may be brought into supporting relation to theflange at the end of the gage block 14% to position the latter inaccordance with the thickness of the leather to be trimmed. mark a maybe provided on the table adjacent each of the hand wheels 39 foraccurately indicating the proper adjustment.

Suitable means are provided for normally holding the gage block 1& incontact with the cam blocks 40. To this end, the central part of the web13 has its upper face lower than the rest of the table 10, and isprovided with overhanging flanges 4-2, forming opposed-longitudinalchannels or guideways 43 in which is guided a slide 44. The front edgeof this slide is normally in abutting relation to the rear face of theblock 14. The rear end of the slide extends over a transverse bar so,integrally or otherwise secured to the table, and provided withrearwai'iilly extending bolts 46, which also extend through a dependingflange 47 formed at the rear end of the slide at, and which are providedwith expansile coiled springs 48 hearing against the rear face of theslide l4, and urging the slide forwardly to hold the gage block 1a inits adjusted position.

In the operation of the invention, the hand wheels 39 are first adjustedto bring the gage block into proper position, according to the thicknessof the leather to be worked upon. The shoe or sole is held in one hand,and the piece to be trimmed is brought into proper position above thecorrugated surface 19 of the gage block, as indicated in dotted lines inFigure The front portion of the web 13, between the ears 18, may bebevelled as shown at 4-9, so as to provide suflicient space for theshoe. lVith the shoe or sole thus held in one hand, the crank 36 isturned by the other hand to advance the carriage 25, whereby the knifeis carried forwardly to trim the leather cleanly and neatly to therequired shape by a single movement. Thus, in a few seconds a neat,clean cut ma Y e made for splicing. No time is lost in clamping the workin the machine, and yet even a novice may trim the eather as accuratelyas can be done on any machine.

While I have shown and described in detail the construction of thepreferred form of the invention, it is to be understood that variousmodifications may be made in the various details thereof withoutdeparting being wedge shaped with sufficient open to accommodate theshoe while the front upon the upper surspace beneath the same upper andinsole of a end of the shank rests face of the block, a carriage, aknife sup-- ported by the carriage, and means to advance the carriz aidknife to skive the front end of the shank when the latter is supportedby the block.

2. A skiver for use in repairing shoes, comprising, in combination, agage block pivotally mounted on a horizontal axis, said block beingwedge shaped with suflicient space beneath the same to accommodatetheupper and insole of a shoe while the front portion of the shank restsupon the upper surface of the block, a carriage slidably mounted infront of the block, a knife supported on the carriage, means to advancethe carriage in a direction to move the knife forwardly across theblock, and means for adjusting the block about its pivot toward or awayfrom the path of the knife in ac cordance with the thickness of theshank 3. A skiver for use in repairing shoes, comprising, incombination, a table having an opening therein, a gage block traversingsaid opening, a knife extending horizontal y across the opening aboveand in front of the block, a carriage on which the knife is supported,and means to advance the carriage in a direction to move said knife intoshearing relation to the block, said opening being extensive enough toaccommodate the upper and insole of a shoe while the front upon theupper surface of the block.

i. A skiver for use in repairing shoes, comprising, in combination, atable having an opening longitudinally thereof, a pivotally mounted gageblock traversing said pening, a knife extending across the open ing infront of the block, a carriage on which the knife is supported, means toadvance the carriage in a direction across the upper face of the block,said opening being sulliciently extensive to accommodate the upper andinsole of a shoe beneath the block while the front portion of its shankrests upon the upper surface of the block, and means for adjusting theblock about its pivot toward or away from the'path of the knife inaccordance with the thickness of the shank.

5. A skiving machine, comprising,in com- "e in a direction-to causeportion of its shank rests bination, a table having an opening ther in,a gage block pivotally mounted on the table and traversing said opening,a cam shaft journaled at each side of the opening underneath the blockand carrying a cam with a plurality of flat faces at dif ferentdistances from the center, each shaft being rotatably adjustable tobring any one of the cam faces into supporting rela ion to the block tovary the position of the lat ter about its pivot, a carriage mounted infront of the block, a knife secured to the carriage, and means toadvance the carriage in a direcion to move the knife into cooperativerelation to the b ock.

A skiver for use in repairing shoes, comprising, in combination, a wedgeshaped gage block with its converging faces meeting at the forward edgeof the block, said block having depending flanges at its ends, meansconnected with the flanges and fori ing a pivotal support for the blockpermitting it to swing about a horizontal axis, the space beneath theflanges being sufficient to accommodate the upper and insole of a shoewhile the forward portion of its shank rests upon the upper surface ofthe block, a knife, a carriage on which the knife is carried, means toadvance the carriage to bring the knife into cooperative relation to theupper 'urface of the block to skive a shank supported thereon, and meansto adjust the gage block about its axis to adapt it to the thickness ofthe shank.

7. A skiver for use in repairing shoes, comprising, in combination, awedge shaped gage block pivotally supported at its lower rear edge on ahorizontal with its converging faces meeting at the front of the block,a carriage having a knife thereon, means to advance the carriage tobring the knife into cooperative relation with the u aper face of theblock, spaced cams on which the forward part of the gage block rests,the space between the cams and beneath the block being suflicient toaccommodate the upper and insole of a shoe While the front portion ofits shank rests upon the upper surface of the block, means for adjustingsaid cams so as to present supporting surfaces of different height tosaid gage block, and yieldable means bearing against the rear face ofthe gage block above its pivot to hold said gage block in contact withthe cams.

8, A skiving machine, comprising, in combination, a table having alongitudinal opening therein, a gage block traversing said opening, aknife extending horizontally across the opening, a carriage by which theknife is supported, means for advancing the carriage in a direction tomove the knife into shearing relation to the block, a cam shaftjournaled at each side of the opening underneath the gage block andcarrying a cam with a plurality of flat faces at different distancesfrom the center, each shaft being rotatably ustable to bring any one ofthe cam faces into supporting relation to the block to vary the positionof the latter about its pivot, and a slide yieldably held in engagementwith said gage block and operable to hold the latter normally in contactwith the cams.

9. A skiving machine, comprising, in combination, a table having alongitudinal opening therein, a gage block traversing said opening, aknife extending horizontally across the opening, a carriage by which theknife is supp rted, means for advancing the carriage in a direction tomove the knife into shearing relation to the block, a cam shaftjournaled at each side of the opening underneath the gage block andcarrying a cam with a plurality of flat faces at different distancesfrom the center, each shaft being rotatably adjustable to bring any oneof the cam faces into supporting relation to the block to vary theposition of the latter about its pivot.

In testimony that I claim the foregoing as my own, I have heretoa'liixed my signature.

JOE MUSAGGHIA.

